The bottom is called bathymetry.
Bathymetry
A bathymetrist is a person who carries out bathymetry - the measurement of the depths of oceans or seas.
Underwater topography is typically referred to as Bathymetry.
Bathysphere, bathymetry, bathyscaphe.
The acronym WASSP stands for Wide Angle Sonar Seafloor Profiler. It is a type of multibeam sonar technology used for seabed mapping and bathymetry in the marine industry.
Roger J. Vanwyckhouse has written: 'Synthetic bathymetric profiling system (SYNBAPS)' -- subject(s): Acoustic models, Bathymetry, Data processing, Computer programs
James Barr Ridlon has written: 'Bathymetry and structure of San Clemente Island, California, and tectonic implications for the southern California continental borderland' -- subject(s): Geology
A bicycle is not a technology that helps us know what the ocean floor is like. Sonar, bathymetry, and remote-operated vehicles are technologies commonly used for mapping the ocean floor.
Bathymetry is the technology used to map seafloor features. It involves measuring the depth of the ocean floor using sonar or sound waves. Bathymetric maps are essential for studying and understanding underwater topography and features.
Satellites use radar altimeters that are specially made tomeasurethe height of the ocean surface. The satellitesmeasurethe height of the ocean surface with an accuracy of 3cm realitve to the center of the earth.
A geographer would use sonar to map the ocean floor or lake bed, measure water depth, and identify underwater features such as trenches, mountains, or shipwrecks. Sonar technology helps geographers study and understand the topography and bathymetry of underwater environments.